Researcher, historian and author Harry Cooper is recognized as the world's leading authority on the history of the German U-Boats. He met and became friends with the great skippers, many officers and crewmen of the U-Boats as well as with many others on all sides who fought in WW II. His books are the most accurate history of the U-Bootwaffe to be found anywhere in the world because the history in the books is actually the memories of the warriors who fought Would War Two. In recent years, he has become one of the world's leading historians of the 3rd Reich - postwar.